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    FILTER MEDIUM EQUIPPED WITH POROUS FILM, PROCESS FOR PRODUCING SAME, FILTER PACK, AND FILTER UNIT
    7.
    发明公开
    FILTER MEDIUM EQUIPPED WITH POROUS FILM, PROCESS FOR PRODUCING SAME, FILTER PACK, AND FILTER UNIT 审中-公开
    具有多孔膜过滤介质，工艺用于生产的滤清器组件及过滤装置

    公开(公告)号：EP2583735A4

    公开(公告)日：2016-05-11

    申请号：EP11795624

    申请日：2011-06-08

    申请人： DAIKIN IND LTD

    发明人： INUI KUNIHIKO ,  SHIBUYA YOSHIYUKI ,  KASAI SHUNJI ,  YAMANAKA TAKU

    IPC分类号： B01D39/16 ,  B01D46/52

    CPC分类号： B01D39/1692 ,  B01D46/521 ,  B01D46/54 ,  B01D46/543 ,  B01D2239/0654 ,  B01D2239/1208 ,  B01D2239/1216 ,  B01D2239/1291 ,  B01D2275/10

    摘要： To provide a filter medium equipped with a porous film whose collection efficiency is high, whose pressure loss is low, and whose dust holding capacity is high. A filter medium includes: a porous film that comprises polytetrafluoroethylene, has an average pore diameter of 2.5 µm or more, and has a porosity of 95% or more; and a support material that supports the porous film. In the filter medium, pressure loss when air is passed through the filter medium at a velocity of 5.3 cm/sec is less than 100 Pa, the collection efficiency of NaCl particles when air including NaCl particles with a particle diameter of 0.3 µm is passed through the filter medium at a velocity of 5.3 cm/sec is 95% or more, and the PF value obtained by the equation PF = {-log[(100-collection efficiency (%))/100]/pressure loss (Pa)} × 1000 is 30 or more. The dust holding capacity of polyalphaolefin particles when air including polyalphaolefin particles with a count median diameter of 0.25 µ3m is continuously passed through the filter medium at a velocity of 5.3 cm/sec and pressure loss reaches 300 Pa is 15 g/m 2 or more.

    摘要翻译： 提供一种配备有一个多孔膜是谁的收集效率是高的，其压力损失低，且其对容尘量是高的过滤介质。 一种过滤介质，包括：多孔膜确实包括聚四氟乙烯，对2.5微米或更大的平均孔径，并具有95％以上的孔隙率; 和支撑材料做支撑多孔电影。 在过滤介质，压力损失当空气通过过滤介质在5.3厘米的速度传递/秒小于100帕，氯化钠颗粒的收集效率。当具有0.3微米的颗粒直径的空气包含的NaCl颗粒穿过 在5.3厘米/秒的速度在过滤介质为95％以上，并且由公式PF =获得PF值{-log [（100-捕集效率（％））/ 100] /压力损失（Pa）} ×1000是30个或更多。 当空气包含与0:25μ3m的计数中值直径的聚α-烯烃的颗粒通过过滤器介质在5.3厘米/秒和压力损失的速度连续通过聚α-烯烃颗粒的灰尘保持容量达到300帕为15g / m 2以上。